Gearing



' 1 620 849 Marh 15 1927. J. T. WILLIAMS, 7 a

GEARING Filed July 14, 1925 2 Sheets-Sheeiil JAMES IZT' W/LL/HMS YPatented Mar.,,15, 192'7i;

1 mast enannvea a Application f led- Iul y 1 4,

. This invention; 1 relates to gearing and more particularly to anauxiliary transmission gearing-formotor vehicleshaving trans-y mission,gearing of the ;plan etary type. An object of the 1nvent1on 1s toprovrdeauxiliary transmission gearing .adaptedfto be arranged on the main'shaftin which the main shaftnow forming a partof the auto: p f V Theauxiliary[transm ssion forming the,

mobile maybe employedi'j a H a In assemblingthe transmission gear ng' onthe vehicle, .the drive shaft 18; cut 1n, two

and-Van objectof the present-invention is the provision of means foralining the abutting ends of the two sections of the shaft; V I Afurther object of the invention is to provide a construction in which atransmission shaft is arranged on each sideofthe main shaft to reducethe torque produced in simii is employed.

larconstructions in which a single transmission shaft onone side'of thedrive shaft In the accompanying drawings, I have shown one embodiment ofthe invention, In

, ing the-invention applied,' Figure is a vertical ting end thisshowing: a

I Figure l isaperspective view of a -portion of thechassis of a motorvehi'cle'showsectional view sub-i stant-ially on line 2 2 ofFigure :1,

Figure 3 isra perspective view of-{the abutaltered for-.use-inconnection with the trans: mission forming the subject matter of thepresent invention,

Figure 4- .s a vertical-longitudinatsecv tional view through thetransmission showing the movable gear in second speed and,- showing indottedlines, the position of the movable gear in highspeed, T; -.Figure5 is ahorizontal sectional view substantially on line 5 5 of. Figure 4,show-. ingthe movable gear in second-speechand showing, in dotted lines,the position ofthe;

' of Figure l;

movable gear in neutral, p I e Figurefi 1s a ve-rtlcal sectional view onl ne, 6-6 of Figure 5, and, I

L Figure 7 is s1m1lar view on line 17+? Referring to, the drawings, thereference numerall designates the rear, axle of a motor vehicle havingaxle sections (not, shown) arranged ,therein and V operatively connectedto the rear wheels 2 of the vehicle. At thecenter of the axle housing,there is provided the usual differential gearing housing 3; The vehicleis provided wlth the sof .thedrive shaft after it has been es 5. a Se ria1 NOI 4a 7 I i F-EicE. H

usual, drive shaft 4, "mounted in ;a (housing or tube 5 andextendingifrom a tI'tIiSIIllS-w s on-casmg 6 -to the-differentialcasing, The transmission is of the planetary-typexand of.

the usual; construction, being controlled by V 'meanso-f pedals? whichprojectthroughthe frontand rear of the drive shaft. Asshown,

the drive shaft is divided into two sections (see F gures 3,4, and 5),the forward sectron '9 bein'g connected to the Itransmission in theusualmanner and the rearsection'lt) being connected 1 to the differential inthe,

usual manner; The forwardsectioni-s provided with a threaded bore n itsrear end for the reception of acentervplug I1 and the end of this plugis adapted to be re:

ceived in abore 12in the forwardrendof" the rear section to maintain;the sections 7 of the shaft in alinement. Asshown, thejadjacent ends" ofthe shaft sections are provided witha pluralityof I grooves 13. Amovable gear .l lj isarranged on the drive shaft, the gear -beingprovidedwith alter nating grooves and proj ections to receive thealternating ygrooves 13 'and projections formed on the drive shafttobpermit longitudinal-movement of the gearing-14f on; I

the shaft andprevent relative rotational i I movementv ofthe gear andthe'shaft; As

shown, the forward end of the gear is provided with a jhubQ15 having' agroove" 16 i formed therein, A transmission shaft 17 18 i arranged-oneach side Eof'the" drive shaft,

- thetransmission shaftsgbeing ;mounted in; suitable hearings 18in theend walls 119 of thetransmission casingf 'Ajdjacentthe for ward end,each of the transmission shafts is provided with a gear 20 which-iskeyed thereto to revolve therewith and-which is adaptedto mesh with themovable gear 14 when it is'in the forward position shown in full linesin Figures 4 to 6 of the drawings. Adjacent the rear end of each of thetrans-- mission. shafts,there is provided agear or a pinion 21 keyedthereto to revolve therewith and meshing with a drive gear 22 carried 7by m i the rear-section 19 ofthe-ma-in shaftfand securedtheretoby meansof a key 23. V

The movable gear is adapted to be ad-' justed longitudinally of the mainshaft by means of a yoke 24, the arms of'which are i The forward end ofthe transmission lever isconnected to a hand lever 31 which ispivotally-mountedin a pair of arms 32 secured to the main transmissionhousing.

This transmission lever is adapted to be arranged in eitherofthreeflpositions, as

shown in Figure 1 of the drawings, to position the movable gear ineither the full line position shown in Figures 4 and 5 ofthe drawingsorthe dotted line positions shown in the figures. At each end of theauxiliary transmission casing, I provide a clamping member consisting ofa pair of semi-circular members 33 adapted to surround the drive shafthousing 5 and provided with flanges 34st each side to receive bolts 35by means of which the sections are secured to each other. As shown.these clamping sectlons are formed integral with the upper and lowersections of the transmission easing (see Figure 5) and at spacedintervals, the

sections of the transmission casing are secured to each other by meansof bolts 36. This construction prevents the transmission casing frommoving around the shaft as an axis. At thepoint where the sections ofthe .shaft pass through the end walls of the auxiliary transmissionhousing, I provide suitable packing 37 to prevent the loss of thelubricant employed in the transmission housing. v

In operation, the vehicle may be driven in the ordinary manner with theauxiliary transmission arranged in high gear. This is accomplished bymoving the lever 31 to the forward dotted line position shown in Figurelof the drawings, which positions the movable gear 34 over tl'ie'adjacentends of the sections of the main shaft, asshown in dotted lines inFigure 4 of the drawings. The gear thus couples the sections of theshaft to each other to form a direct drive. Particular attention iscalled to; the fact that when in high gear, the lever 31is arrangedinits foremost position andis thus out of the way of the driver. To placetheauxiliary transmission in neutral and thus disconnect the rear axlefrom the drive, the lever 31 is moved rearwardly to the full lineposition shown in Figure l of the drawings, moving the gear 14 to thedotted line position shown in Figure 5 of the drawings, and thusdisconnecting'the rear axle from the source of power; Further rearwardmovement of the lever 31 to the rear dotted line position shown inFigure l of the drawings moves the gear 14 to the full line positionshown in Figures 4 to 6 of the drawings in mesh with the pinions 2O andthus couples the forward section 9 of the shaft to the rear sectionthrough the n transmission shafts 17, pinion 21, and gear 22. Anydesired arrangement of-teeth on the gears and pinions may be. employedfor the purpose of obtaining a desired speed reduction.

adjusted position to prevent accidental movement by the locking member28 which is received in the depressions 27. The

spring 29'retains the locking member in position with sufficient forceto prevent acci- The transmission lever 27 is locked in an dentaldisplacement but maybe readily overcome when-the manually.

It. is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatvarious changes in the shape, size, and arrangement of parts may beresorted to without departing from the spirit of the invention orthescope of the subjoined claim.

I claim: 1

automobile drive shaft divided into front and rear sections connected tothe transmis sion gearing and the-differential; gearing re-' spectively,the adjacent ends of said sections being provided with'longitudinallyextending ribsand grooves, a longitudinally movable gear mounted on'saidshaft, said gear being provided with an opening having longitudinallyextending ribs and grooves to permit relative longitudinal movement ofsaid gear with respect to said shaft and prevent relative rotation, atransmission shaft mounted on each'side of said drive'shaft, a gearmounted on the rear section of said drive shaft, gears mounted on saidtransmission shafts and meshing therewith, 'a'

gear. mounted on each of said transmission shafts iii alinement with theforward section of said drive shaft, said movable gear being adapted tospan the adjacent ends of the shaft sections when in one position tocouple them to each other, and; means for moving said movable gear intomesh with said last mentioned gears to connect the front section of saiddrive shaft to the rear section through said transmission shafts.

In testimony ture. Y

J AMES T. WILLIAMS.

transmission is actuated whereof, I afiix my signa-' a A In a device ofthe character described, an

